DR. LYDIA SUNKYUNG CHUN PSY.D
NPI 1417259524
Psychologist in Buena Park, CA
About Dr. Lydia Sunkyung Chun Psy.d NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. LYDIA SUNKYUNG CHUN PSY.D (NPI 1417259524) is an individual psychologist in Buena Park, California, licensed in California (PSY23921) and active in the NPI registry since November 2010. She is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Dr. Lydia Sunkyung Chun Psy.d is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Lydia Chun reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Fullerton, CA 92832
- Reassigned Medicare billing, California enrollment
- Medicare enrollment name: Gift Inc
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Lydia Chun's NPI number?
The NPI number for Lydia Chun is 1417259524. It was assigned to this individual provider in the NPPES registry on November 22, 2010.
Where is Lydia Chun located?
Lydia Chun practices at 6251 Stanton Ave, Buena Park, CA 90621. The listed phone number is (714) 522-4438.
What is Lydia Chun's specialty?
The primary specialty registered for this NPI is Psychologist with taxonomy code 103T00000X.
Is Lydia Chun enrolled in Medicare?
Yes. Lydia Chun is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Lydia Chun's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Lydia Chun reassigns Medicare benefits to G.I.F.T. Inc. (Fullerton, CA). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Lydia Chun's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Lydia Chun was last updated on December 2, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 22 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.